2014•Chemistry & BioengineeringRequires access
Synthesis of Benzimidazole with o-Phenylenediamine and Benzaldehyde
Liu Xian-xian
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Abstract
Benzimidazole was synthesized by the reaction of o-phenylenediamine and benzaldehyde.The effects of catalyst type and dosage,solvent type,reaction temperature and reaction time on the yield of the object product were investigated.When the reaction was carried out at 50℃for 4hwith the molar ratio of o-phenylenediamine to benzaldehyde of 2.5∶1and the mass ratio of catalyst ammonium metavanadate to benzaldehyde of 0.19∶1,the yield of benzimidazole reached as high as 81.3%.